Poids Mouches Hommes
 | Willie Gates | 1-3-0 UFC | #3440 |  |
 | Wilson Reis | 7-6-0 UFC | #899 |  |
 | Yannis Osmani | 0-1-0 REC | #4036 |  |
 | Yasuhiro Urushitani | 0-2-0 UFC | #4900 |  |
 | Yermakhan Oryntaev | 0-2-0 REC | #3798 |  |
 | Yntymak Glamidin | 0-1-0 REC | #5562 |  |
| Yowanis Houmadi | 0-1-0 REC | #7577 |  |
 | Yuki Ito | 4-2-0 REC | #541 | |
 | Yuki Motoya | 5-2-0 REC | #1235 | |
 | Yuma Horiuchi | 0-1-0 REC | #6593 | |
 | Yumeto Mizuno | #7664 | | |
 | Yunus Khiziev | #7608 |  | |
 | Yuri Suda | 0-1-0 REC | #6075 | |
 | Yutaro Muramoto | 0-1-0 REC | #7235 | |
 | Yuya Shibata | 0-1-0 REC | #6093 | |
 | Zach Makovsky | 3-4-0 UFC | #3042 | |
 | Zarrukh Adashev | 1-3-0 UFC | #3312 |  |
 | Zelim Umarov | 1-0-0 REC | #823 | |
 | Zelimkham Khatuev | 1-1-0 REC | #1875 | |
 | Zelimkhan Islamov | 0-1-0 REC | #6015 | |